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    <title>定位练习</title>
    <link rel="stylesheet" href="./index4.css">
    <style>
        .photo {
            width: 414px;
            height: 253px;
            position: relative;
            margin: 50px auto;
        }
        .logo {
            width: 60px;
            height: 54px;
        }
        .logo1 {
            position: absolute;
            top: 0px;
            left: 0px;
        }
        .logo2 {
            position: absolute;
            bottom: 0;
            right: 0;
        }
    </style>
</head>
<body>
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        <ul>
            <li><a href="./1css样式二.html">css样式二</a></li>
            <li><a href="./键盘焦点与鼠标悬停.html">导航菜单</a></li>
            <li><a target="_blank" href="./字体图标练习.html">字体图标</a></li>
            <li><a href="./立方体动画.html">立方体动画</a></li>
        </ul>
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    <div class="photo">
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